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Finding the Fourth Proportional to 71,523.84, 107,928.96 and 69,052.80

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Solution

The fourth proportional to 71,523.84, 107,928.96 and 69,052.80 is: 104,200.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,523.84 : 107,928.96 = 69,052.80 : x
  2. Step 2: Convert to fraction form
    71,523.84/107,928.96 = 69,052.80/x
  3. Step 3: Cross multiply
    71,523.84x = 107,928.96 × 69,052.80
  4. Step 4: Simplify right side
    71,523.84x = 7,452,796,889.09
  5. Step 5: Solve for x
    x = 7,452,796,889.09/71,523.84
  6. Step 6: Final answer
    x = 104,200.18

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.